Final answer:
The question about which cake gets double toppings is related to business practices, specifically marketing strategies in food services. Without specific details about the establishment's offers, it is impossible to provide an accurate answer.
Step-by-step explanation:
The question, "What cake gets double toppings (if they don't ask for another topping free of charge)?", does not pertain to a specific subject area like Mathematics or Biology. Rather, it is related to a business practice, possibly within the context of a marketing strategy in the food service industry, involving promotional offers for desserts. In order to answer this question factually, one would need to have knowledge of the menu items and the specific promotional offers of the establishment in question. Since this information is not provided within the context of this question, and there is no universally accepted answer that can be derived from common knowledge or academic study, it is not possible to accurately determine which cake receives double toppings without additional information.